What is the * * * surface condition equation? What problems can be solved in photogrammetry by using it?

The relative orientation relation of image pairs. All the same-named rays in the image pairs should meet the condition equation of the intersection of the pairs, that is, the * * * plane condition equation of the same-named rays. By using this condition equation, the relative orientation elements of the image pairs can be solved, so that the spatial coordinates of each model point can be calculated, and a single three-dimensional model of numbers can be established analytically.

Analytical aerial triangulation has been widely used. Digital terrain model technology and analytical mapping instrument will be gradually popularized, and the principle of analytical photogrammetry will be widely used in various fields such as topographic and non-topographic photogrammetry and geometric correction of remote sensing images, and laid the foundation for the automation of photogrammetry.